Please see these DIRECTIONS at the Reference Services Library Guide
Your account is probably expired. Please call the circulation desk at 443-885-3477 and ask them to renew your account. if your account has not expired and there is some other problem they can help you identify and solve the issue.
You can renew items online through your account (see above) or you can call the Circulation desk at 443-885-3477.
You can find all hours on the library home page or on this guide HERE. For holiday hours see HERE